JPH08320638A - Regenerating method for image support body and device used therefor - Google Patents

Abstract

PURPOSE: To regenerate an image supporting body whose paper fiber surface is not exfoliated even in the case where a line drawing whose print part area is large is held and to be easier on paper by providing a roller with a contact surface consisting of a part brought into contact with a supporting and image exfoliation body and a part which is not brought into contact with it and making the area of the contact part large and small. CONSTITUTION: The supporting and image exfoliation body 7 inserted and carried from an insertion part 6 is carried while being partially brought into contact with the rotation body 9-1 in a state where it is heated and pressured after it is carried while being partially brought into contact with the roller 8-1 having the small part partially brought into contact with the body 7 in the state where it is heated and pressured. Besides, it is carried while being successively brought into partial contact with the rollers 8-2, 9-2, 9-3... having the small part partially brought into contact with the body 7 in the state where it is heated and pressured. At the final stage, it is carried to a rotation body 11 and the roller 10 whose whole surface is brought into contact with the body 7. Thus, plain regenerated paper which is obtained by perfectly eliminating an image and on which a copying action can be executed again is obtained from a discharging part 12.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method of reproducing an image support from an image support (hereinafter also referred to as a recording material) on which an image made of a thermo-flexible ink toner is formed, for example, a printer paper holding an image or a paper. The present invention relates to a method of reproducing and reusing copy paper.

[0002]

2. Description of the Related Art Due to recent OA, printer paper and copying paper have come to be used in large quantities. As a result, the problem of deteriorating the global environment due to deforestation has become a problem. Conventionally, to solve this problem, the only method is to remove the ink or the like on the used paper, soak it again, and reuse it to recycle it to waste paper. However, recently, a method has been developed in which a character image on a used paper can be removed by cleaning and reused for copying or printing. For example, such a method is described in the following publications. (1) Japanese Unexamined Patent Publication No. 4-64472: A release agent such as a silicone sealant is applied to the surface of an unused copy paper and dried to prepare a copy reproduction paper, and then an image forming copy is formed on the release agent application surface. To do. The image forming body is adhered to a heat-fusible resin (toner resin as an image forming component) to remove the image, and a copy reproduction sheet is prepared. However, according to this method, since the image is on the release agent, the fixing property naturally deteriorates. The toner is adhered to the image forming component toner resin, and the image is mechanically peeled off in a heated state. Therefore, the toner resin of the image component that has penetrated into the eyes of the paper fiber cannot be completely removed. Therefore, the regeneration efficiency is considered to be very poor. From the viewpoint of resource reuse, double-sided copying, that is, front / back double-sided copying of a single copy sheet is important, and is considered to be the mainstream in the future. Under such circumstances, the method of applying the release agent on one side becomes very inefficient. Even if a release agent is applied to both sides and dried, the silicone sealant will penetrate into the copy paper, resulting in a translucent copy paper. Therefore, double-sided copying becomes impossible (difficult to see). Erasable paper and plain paper must be distinguished and copied, which is inefficient. It is difficult to make a copy of a mixture of erasable paper and plain paper and in a state where it matches the actual situation. (2) JP-A-1-297294: An image-forming support made of plastic, metal, paper having poor liquid permeability, ceramics or the like is used, and the image formed on the support is heat-melted. A cleaning method is described in which the image is peeled off from the support by heating with an intermediary release member interposed between them, but a special paper (erasable paper) with a release treatment on the surface must be used. There is a drawback that it cannot be applied to general-purpose copying paper and printing paper that are used in large quantities. (3) JP-A-6-206358 and JP-A-6-2083
No. 18: The image forming toner is removed from the image forming support by a mechanical treatment in which the image forming toner resin on the image forming support is swollen in an organic solvent type deinking agent and scraped off with a brush, a cloth belt, a blade or the like. Although it is disclosed that
This method may damage the image forming body. (4) JP-A-4-89271: After coating or impregnating a treatment liquid on an image forming support on which an image of an image forming toner resin is formed, a brush-shaped or a blade-shaped member is pressed or rubbed. By doing so, it is disclosed that the image forming toner is removed from the image holding support. This method may also damage the image forming body.

Therefore, not only cleaning of copy images and print images of special paper such as erasable paper, but also copy paper and print paper by cleaning of ordinary PPC copy images and PPC print images currently used in the market. There is a demand for a reproducing method or a reproducing apparatus that can reproduce and reproduce and can be reused for copying or printing. From this, water is applied to the image carrier, at least a part of which is composed of a paper-like layer containing cellulose fibers as a main component, and a hydrophobic image formed of a thermo-flexible ink is formed on the paper layer. The present applicant has already proposed a cleaning and reproducing method in which a liquid containing the liquid is impregnated and held, and the hydrophobic image is peeled from the paper-like layer to the peeling body side by the image peeling means in the liquid-impregnated state. The previously proposed method can be realized, for example, by adopting a method of impregnating an aqueous solution containing a relatively low concentration of a surfactant in one step. However, the entire image carrier is impregnated with the aqueous solution, and as a result, the boundary surface between the image and the paper fiber is impregnated with more aqueous solution than necessary. Therefore, after peeling and removing the image, a large amount of drying energy is required to dry the image carrier so that the image carrier can be re-copied, and there is a disadvantage that the power consumption of the reproducing apparatus as a whole increases. As a result, deformation of the paper-like layer such as wrinkles, corrugations, and curls is likely to occur frequently. Therefore, in order to reduce the power consumption of the entire reproducing apparatus, the applicant of the present invention supports and supports a plurality of zigzag-shaped rollers while continuously contacting each other without a gap in the peeling process.
By transporting the image peeling body, the heat is effectively used and the power consumption of the entire reproducing apparatus is reduced. However, in this proposed method, the adhesiveness between the paper fiber of the solid image having a large printing area and the thermo-flexible ink is stronger than that of the line drawing,
As a result, a paper peeling phenomenon occurs and there is a problem that incomplete peeling occurs.

[0004]

Generally, there are roughly two types of images carried on an image support. One of them is a so-called line drawing, which has a small printing area. For example, it is represented by letters and key lines. The other one is a so-called solid image having a large print area, which is represented by a picture, a thick character, and a thick key line. Images that are said to be line drawings with a small area for printing are, of course, the adhesiveness between paper fibers and hot-melt ink.
Not only is the adhesion area between the paper fiber and the image small, but there is no adhesion between the images, and the adhesion is weaker than the adhesion between the paper fiber and the hot-melt ink of a solid image having a large print area. On the other hand, when image peeling is performed on the image support holding the image including the line image and the solid image by the conventional method, the solid image has a large adhesive area between the solid image and the paper fiber, Since the adhesive strength is strong due to the above-mentioned adhesion, if the solid image is peeled off at once, the paper fiber surface may be peeled off or incomplete peeling may occur. It is an object of the present invention to provide a method of reproducing an image support and a reproducing apparatus which solve the above problems.

[0005]

The first aspect of the present invention is to form a hydrophobic image composed of a thermo-flexible ink on at least a part of which is composed of a paper-like layer containing cellulose fibers as a main component. The image holding body is impregnated with a liquid containing water, and the image peeling body is adhered and integrated on the surface of the image holding support impregnated with the liquid containing water. While continuously contacting a plurality of rollers arranged in a zigzag manner, an integrated state object (hereinafter, also referred to as a support / image peeling member) that is hermetically sealed or closely sandwiched by a sheet-like member that does not pass through without a gap. In a method of reproducing an image support for transporting and peeling a hydrophobic image from a paper-like layer, at least one of the plurality of rollers is a contact surface composed of a portion that does not contact the support and image peeling body. Have And a method of regenerating the image support, wherein the area of the portion in contact with the support / image peeling body is large and small, and the plurality of rollers of the portion in contact with the support / image peeling body. The present invention relates to a reproducing method arranged in the order of a small area to a large contact area.

A second aspect of the present invention is an image holding and supporting device which is composed of a paper-based layer, at least a part of which is composed mainly of cellulose fibers, and which forms a hydrophobic image of a thermoflexible ink on the paper layer. A means for impregnating and holding a liquid containing water in the body, and an image peeling body is closely adhered to the surface of the image holding support impregnated with the liquid containing water, and
Means (b) for forming a support / image peeling body by sealing or tightly sandwiching the contact-integrated body with a sheet-like member that does not allow moisture to pass through, and a part which does not contact the support-image peeling body. In addition, a plurality of rollers each having a large or small area in the area of contact with the supporting / image peeling body are arranged so that the supporting / image peeling body can be continuously brought into contact with the supporting / image peeling body without a gap. Reproduction of an image support comprising at least image peeling means (c) consisting of a material, and further finishing means (d) of the image support regenerated by peeling the image by the image peeling means as required. A device and a reproducing device for an image support in which the plurality of rollers are arranged in this order from one having a small contact area to a support / image peeling body to one having a large contact area. That.

In the present invention, as described above, the plurality of rollers are brought into contact with each other in the order of the area of the portion in contact with the support / image peeling body to the one having the large area of contact to peel the image. By doing so, the large adhesion area between the paper-based layer and the hydrophobic image made of thermo-flexible ink, that is, a large image or a solid image with a strong adhesive strength is first divided into a small portion, and thus a weak adhesive strength portion. The images can be completely peeled off without damaging the surface of the paper-like layer such as the cellulose fibers are peeled off together with the image because they are peeled off sequentially. Therefore, since the image formation and the peeling of the image can be sufficiently and rapidly repeated using one image support, the image support can be easily reused. The image support of the present invention mainly includes copying or printing paper, but it is not limited to these and any support may be used as long as it holds an image on the support. Further, the structure of the support does not have to be entirely composed of a paper layer, and the layer on which the hydrophobic image of the thermoflexible ink (toner) is held may be a paper-based layer containing cellulose fibers as a main component. , For example, a laminate of a paper layer and a plastic layer, and the image support further includes an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer and a water-soluble polymer and a surfactant before image retention. It may be impregnated with at least one aqueous solution selected from the group consisting of contained aqueous solutions and dried.

As the toner component resin of the thermo-flexible ink removed in the present invention, polystyrene, acrylic resin, methacrylic resin, styrene-butyl acrylic copolymer, styrene-butadiene copolymer, polyester, epoxy resin and the like are used. Can be mentioned. Generally, when paper is moistened with water, the so-called waist becomes weak. At this time, the adhesiveness between the hydrophobic thermo-flexible ink (toner) held in the paper quality layer and the paper quality layer is very weak. That is, in the paper quality layer containing cellulose fibers as a main component, the fibers are entangled with each other, and the surface of the paper quality layer has innumerable irregularities, and furthermore, the inside of the paper quality also has innumerable minute voids. When the hydrophobic image is carried on the paper material in such a state, the thermo-flexible ink (toner) image fixed in the PPC copying process is larger than the unevenness and the minute voids due to the entanglement of the cellulose fibers. A large number of spaces are present in the contact area between the cellulose fiber and the image. When an image holding paper carrying such a hydrophobic image is impregnated with the above liquid containing at least water (peeling liquid) by impregnation by dipping, spraying, etc., the liquid causes the cellulose fibers and their voids and spaces to be dispersed. Thermally flexible ink (toner) that penetrates by capillarity
The peeling solution penetrates even to the contact area between the image and the cellulose fiber. As a result, when the action of reducing the adhesive force between the thermo-flexible ink (toner) image and the cellulose fiber and the absorption of the peeling liquid by the cellulose fiber, the cellulose fiber is deformed due to a so-called swelling phenomenon and the thermo-flexible ink (toner). ) The space of the contact portion with the image is increased, the contact area between the cellulose fiber and the thermo-flexible ink (toner) image is reduced, and the adhesive force is reduced, and the like, so that the cellulose fiber and the thermo-flexible ink ( (Toner) Adhesion to the image becomes very weak. Therefore, a state in which the liquid containing water is impregnated in the paper layer containing the cellulose fibers of the image-bearing paper on which an image is formed,
In particular, by adopting the above-mentioned peeling means in a state where the liquid containing water is sufficiently impregnated with the surfactant, the image can be easily printed without damaging the paper layer and the thermal flexible ink ( Therefore, it is possible to remove the minute fragments of the toner) without remaining. Further, by holding the water-soluble polymer together with water on the image-holding paper, a heat-flexible ink (toner) image in the concave portion of the paper-like layer that cannot directly contact the image peeling body or a heat-flexible ink (toner) inside the cellulose fiber. ) The water-soluble polymer adheres to the image, and the adhesive force enables the heat-flexible ink (toner) image to be peeled off without damaging the paper quality. Examples of such water-soluble polymers include water-soluble natural polymers such as starch and the like as described in Japanese Patent Application No. 6-272826 filed by the present applicant, and water-soluble semi-polymers such as cellulose and starch. High molecular,
Examples thereof include, but are not limited to, water-soluble synthetic polymers such as polyvinyl alcohol.

The image removal promoting liquid used in the present invention is water or an aqueous solution containing water. The image removal promoting liquid is applied to the same recording material once or a plurality of times. When the liquid is applied in a plurality of times, it is not always necessary that all of the liquids applied in each time contain water, but the liquid containing water is at least once in the plurality of applications. Granted to. The image removal promoting liquid preferably contains a surfactant, a water-soluble polymer, and a water-soluble organic compound in addition to water. The surfactant has a function of quickly permeating the recording material with the image removal promoting liquid. As the image removal promoting liquid, it is preferable to use a liquid whose surface tension is adjusted to 50 mN / m or less. By using an image removal promoting liquid whose surface tension is adjusted to 50 mN / m or less, the wettability of the liquid with the recording material or the image forming substance on the recording material is increased, and the recording material swells. Since the permeation speed into the layer is increased, high-speed processing and downsizing of the processing device are possible. As the surface tension, it is preferable that the static surface tension is adjusted to 50 mN / m or less, but in order to support high-speed processing, it is measured by, for example, a vibration jet method, a droplet weight method, a bubble pressure method or the like. It More preferably, the value of dynamic surface tension is adjusted to 50 mN / m or less. By adding the surfactant to the image removal promoting liquid, the surface tension of the image removal promoting liquid is adjusted to 50 mN / m or less. When the liquid containing water is applied once to the image carrier, the concentration of the liquid containing water and the surfactant in the image carrier is preferably 0.01% to 20%, more preferably 0.01 to 20%. 5%. If the concentration of the surfactant as a whole is too high, it imparts conductivity to the paper, which is not preferable at the time of re-copying. On the other hand, the concentration of the water-soluble polymer in the liquid containing water is preferably 0.1 to 20%, more preferably 0.5 to 10%. If the concentration of the water-soluble polymer is too high, the viscosity becomes high, the penetration into the paper is delayed, and it takes a long time to carry out the peeling treatment, which is not preferable.

The application of the image removal promoting liquid to the recording material does not necessarily have to be carried out in one step as described above.
It can be performed in two or more stages. For example, in the case of performing in two stages, an image removal accelerating liquid mainly composed of water containing a high concentration of a surfactant is applied very thinly in the first stage, and then in the second stage, water or a low concentration of An image removal promoting liquid mainly composed of at least one kind of water selected from the group consisting of a surfactant aqueous solution, a low concentration water-soluble polymer aqueous solution, or a low concentration surfactant and a low concentration aqueous polymer aqueous solution. Apply very thinly and in small amounts. For example, 1 to 100 wt% in the first stage, more preferably 10 to 100 w
0.01 to 1 g / A4 (A of aqueous solution of t% surfactant)
The amount contained in the 4th image support is shown. Hereinafter, this display will be used. ) Range, preferably 0.01-0.5 wt
%, More preferably 0.01 to 0.2 wt% of an aqueous surfactant solution, a low concentration aqueous solution of a water-soluble polymer, or at least a group selected from the group consisting of a low concentration surfactant and a low concentration aqueous polymer solution. An image removal accelerating liquid mainly composed of water is impregnated and applied in an amount of 0.01 to 2.0 g / A4, preferably 0.01 to 1.0 g / A4. The application of the image removal accelerating liquid to the recording material may be further divided into multiple stages according to the purpose. Increasing the number of application steps tends to allow good image removal even when the total amount of liquid applied per unit area of the recording material is small. However, if the number of stages for applying the liquid is increased, the configuration of the device for applying the liquid becomes complicated accordingly, so that it is necessary to make an appropriate selection according to the purpose.

In the present invention, the wettability between water and the image-bearing paper is important in order to moisten the image-bearing paper made of thermo-flexible ink (toner) with water in a sufficiently short time. Further, in order to remove the image from the image holding paper, it is necessary that water sufficiently penetrates into the boundary between the thermo-flexible ink (toner) and the paper. As described above, the surfactant serves as an action of promoting the capillary phenomenon and allowing the liquid containing water to quickly permeate into the support holding the hydrophobic image made of thermo-flexible ink (toner). The surfactant is generally one whose molecule is composed of a combination of a lipophilic group and a hydrophilic group, but the kind of the surfactant used in the present invention is not particularly limited, and for example, the present applicant The one described in Japanese Patent Application No. 6-272826, which has already been filed by K.K. For example, fatty acid derivative sulfate ester, sulfonic acid type, phosphoric acid ester type anionic (anionic) surfactant, quaternary ammonium salt, heterocyclic amine, amine derivative and other cationic (cationic) surfactant, amphoteric interface Activators, nonionic surfactants, etc. may be mentioned.

The plurality of zigzag-arranged rollers used in the present invention come into contact with the support / image peeling body as shown in the sectional shapes of FIGS. 2, 3, 4, 5 and 6, for example. A plurality of rollers having a contact angle consisting of the portion 4 which does not contact the portion 3 can be exemplified. That is, the portion that comes into contact with the support / image peeling body or the portion that does not come into contact with the support / image peeling body has a square shape as shown in FIG. 2, a circular shape as shown in FIG. As shown in FIG. 5, a spiral continuous shape and the like can be mentioned, but the invention is not limited to those shown in these drawings as long as the intended effect of the present invention can be obtained. Further, the plurality of rollers, as shown in FIG.
It may be a hollow body in which a through hole is provided from the surface of the portion not contacting the support / image peeling body toward the inside. However,
The present invention is not limited to those shown in the drawings as long as the intended effects of the present invention can be obtained. The contact surface of a plurality of rollers as shown in each of the above figures, for example, the unevenness of the pattern is formed on the surface of the roller and the rotator itself, or the material for adhering to the hydrophobic image is formed into the pattern as shown in each of the figures. It can be formed by coating or adhering a sheet, a belt or the like capable of forming the pattern as shown in each of the figures to the surface of a plurality of rollers. Further, the shape and / or the size of the portion which comes into contact with the support / image peeling body and the portion which does not come into contact therewith may be the same or different. However, a plurality of rollers having different areas in contact with the support / image peeling body are supported on the hydrophobic image in order from the image peeling body having a small area to adhere to the image to the area having a large contact area. -When contacting the image peeling body, support of each roller and the rotating body-The area of each portion contacting the image peeling body does not necessarily have to be the same, and it is configured by combining parts of different areas. Although it may be present, it is preferable that the maximum area of the part of the former image peeling body which adheres to the hydrophobic image is smaller than the minimum area of the part of the latter image peeling body which adheres to the hydrophobic image. . The plurality of rollers used in the present invention may have any size as long as the area of the portion adhered to the support / image peeling body as described above, but the last roller and the rotating body are preferably the support / image It is preferable to use one having a solid contact surface that does not have a portion that does not come into contact with the peeling body. At least one roller among the plurality of rollers can be rotationally driven by a motor, and the other rollers can be driven rollers.

Examples of the material constituting the portion of the plurality of rollers which comes into contact with the support / image peeling member include polyethylene terephthalate, polystyrene, polypropylene, acrylic resin, methacrylic resin, epoxy resin, and styrene-butyl acrylic copolymer. Polymers, polymeric materials such as styrene-butadiene copolymer can be mentioned,
In particular, a toner component resin of thermo-flexible ink or a resin having an SP value similar to the resin is preferable. Also, support
The following component resins of the adhesive can be used as the material forming the part that is bonded to the image peeling body. However, the adhesive is not limited to the above as long as it has adhesiveness to the image, and may be water-soluble or water-insoluble. Adhesive component resins: glue, gelatin, albumin, casein, and other protein resins, starch, cellulose fiber, complex polysaccharides (eg, gum arabic, tragacanth, etc.), carbohydrate resins, vinyl acetate polymers and copolymers Coalesce, acrylic, ethylene copolymer, polyamide, polyester,
Thermoplastic resin such as polyurethane, polychloroprene-based, nitrile rubber-based, recycled rubber-based, SBR-based, and natural rubber-based rubber-based resin.

The image peeling member used in the present invention is a member for adhering to the image forming substance on the recording material and transferring and peeling it from the recording material, and the image peeling member contacts with the image forming substance. The material forming the part is required to exhibit adhesiveness and heat resistance to a certain degree or more with the image forming substance, and examples of the material include isoprene rubber,
Neoprene rubber, chloroprene rubber, silicone rubber,
Synthetic rubber such as butadiene rubber and fluororubber, natural rubber, epoxy resin such as bisphenol / epichlorohydrin condensate, alkyd resin, urea formaldehyde resin, butyl urea formaldehyde resin, butylated melamine formaldehyde resin, benzoguanamine formaldehyde resin and other amino resins, Terpene phenol resin, phenol ether resin, phenolic thermosetting resin such as phenol resin, polyvinyl chloride, polyvinylidene chloride, vinylidene chloride-acrylonitrile copolymer,
Vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, ethylene-tetrafluoroethylene copolymer, vinyl copolymer such as polyvinylidene fluoride, polyvinyl butyral, polyvinyl formal, polypropylene, polyethylene-based vinyl-based copolymer Polymers, acrylic resins such as polybutyl acrylate, polymethacrylic acid and polymethylmethacrylate, polyimides, polyamides such as 6,6-nylon and 6-nylon, polycarbonate, polyether sulfone, polyether ether ketone, polyethylene terephthalate, polyethylene naphthalate , Polyesters such as aromatic polyesters, thermoplastic or thermosetting synthetic resins such as polyphenylene sulfide, polyparavalanic acid, polyether nitrile, and aramid. Le, stainless steel, metals and oxides such as aluminum, ceramic materials and the like as an example. The most suitable material for the peeling member is
It should be selected according to the type of the image-forming substance to be peeled off and the image-forming substance removing process, but repeated use of the peeling member is advantageous in various points such as reducing the reproduction cost. Relatively high heat resistance and surface stability are required. Examples of preferable peeling member from the image removing property and durability are polyethylene terephthalate, polyethylene naphthalate, polyether ether ketone, polyphenylene sulfide, polyparavalic acid, polyether nitrile, aramid, polyimide, polyether imide, stainless steel, nickel. , Alumite and the like. These materials can be used alone, but can also be used in combination by laminating, alloying, adding other additives such as glass fiber, whiskers, carbon, silica, titanium oxide and the like.

Hereinafter, the reproducing method and the reproducing apparatus for the image carrier of the present invention will be specifically described with reference to the drawings. In FIG. 1, an image carrier having a hydrophobic image formed of thermo-flexible ink (toner) stored in a paper feed unit A is transported to a coating unit B by a transport roller and water or a liquid containing water is transferred to the coating unit B. It is applied to the image carrier. The image carrier holding the water or the liquid containing water has the image peeling function and the drying function immediately after the supporting / image peeling roller 1 driven by a drive system (not shown) forms the supporting / image peeling body. The hydrophobic image is peeled from the image holding support under heat and pressure at the image peeling section C which has. The sheet is stored in the sheet discharge section E from which the hydrophobic image reproduced by the above operation is peeled. Next to the image peeling section C, if necessary, a finishing section D
May be provided. In the finishing section D, when the image support is not sufficiently dried in the image peeling section C, further drying is performed, and if necessary, smoothing of the surface of the image support and wrinkles, waviness, and stretching. Finishing process such as removing After finishing the reproduction image support as described above, the plain reproduction support without the hydrophobic image is stored in the paper discharge section F. Further, the hydrophobic image on the peeling belt, to which the hydrophobic image separated by the separating roller 2 driven by a driving system (not shown) is peeled and transferred, is cleaned by the cleaning unit F, and a clean surface is used to hold the image again. It will be usable.

Further, the structure and the peeling action of the image peeling portion of the image support will be described in more detail with reference to FIGS. 7, 8 and 9. In FIG. 7, the supporting / image peeling body 7 inserted and conveyed from the inserting section 6 is conveyed while being partially contacted with the roller 8-1 having a small part in partial contact with the supporting / image peeling body 7 under heating / pressurization. After rotating, the rotating body 9-
It is transported while being in partial contact with 1 under heat and pressure.
Similarly, the rollers 8-2, 9-2, 8-3, 9-3, ...
.. is conveyed while making partial contact under heating and pressure, and at the final stage, it is conveyed to the rotating body 11 and the roller 10 that are in full contact with the supporting / image peeling body 7, and the heat from the discharge section 12 is conveyed. Not only solid images made of flexible ink (toner) with a large printing area, but also line images with a small printing area are completely removable without any paper peeling from the support, and a reproducible plain image is obtained. A recycled paper was obtained. Figure 9
As shown in FIG. 1, the support / image peeling belt 16 and the roller 1
When 3, 15 and the rotating body 14 are in continuous contact with each other in a zigzag shape, the tension in the support / image peeling body belt 16 applies a pressure in the directions 17a, 17b, 17c to the support / image peeling body belt 16. Further, in addition to the above pressure, pressure due to the weight of the rotating body 14 is also applied to 18a and 18b.
Such a support / image peeling body belt 16 and roller 1
When the entire surfaces of 3, 15 and the rotating body 14 are in contact with each other, the pressure-adhesive force between the heat-flexible ink (toner) in the support / image peeling body belt 16 and the peeling body belt for transferring and peeling the toner image becomes uniform. Then, the solid image and the line drawing are peeled off at the same time. However, since the solid image has a larger adhesive surface to the image peeling body between the solid image and the line drawing, even if the line image is peeled off, the solid image peels off the cellulose fiber, so-called paper peeling state. Occurs, or insufficient peeling of the image occurs. On the other hand, as illustrated in FIG. 8, when the supporting / image peeling body is in partial contact with the roller / rotating body 22, the contact surface between the convex portion of the roller / rotating body 22 and the supporting / image peeling body 25. However, the pressure 24 is not applied to the non-contact surface between the concave portion of the roller and the rotating body 22 and the support / image peeling body 25. As a result, the peeling belt 19 and the thermal flexible ink (toner) 2 in the support / image peeling body 25 are formed.
1. The pressure applied to the image holding member 20 is strong and weak, strong pressure is applied to the convex portions of the roller and the rotary member 22, and weak pressure is applied to the concave portions, so that the peeling belt 19 and the thermo-flexible ink (toner) 21. There will be a difference in the adhesive force between the image carrier 20 and the image carrier 20. As a result, transfer peeling occurs in a small area, paper peeling does not occur, and image peeling is insufficient with a pair of rollers and a rotating body. However, by repeating image peeling between a plurality of rollers and a rotating body as shown in FIG. 7, it is gentle to paper without peeling, corrugation, curling, etc., and the image can be completely peeled off. The image can be peeled off.

Further, another operation of the present invention will be described. The case of transferring and peeling the thermo-flexible ink (toner) of the image from the image holding member to the image peeling member will be described. When the heat-flexible ink (toner) of the image is transferred and peeled from the image carrier to the peeling body, it is carried out under heating and pressure conditions. As the heating means, (1) the entire peeling process unit including the plurality of rollers, the plurality of rotating bodies, and the support / image peeling body is inserted into the atmosphere heater box 26 illustrated in FIG. Or (2) heating with the plurality of rollers, or (3) heating with the plurality of rollers and heating with the plurality of rotating bodies. The heating is performed at (1) a fixed temperature set between the softening temperature of the thermo-flexible ink (toner) and the temperature immediately before the start of flow, or (2) the insertion side and the discharge side of the support / image peeling body. It is possible to employ a method of providing a temperature gradient within the above temperature range.
That is, while the thermo-flexible ink (toner) is not softened, the condensing force of the toner self-confidence and the adhesive force between the toner and the paper are stronger than the adhesive force between the toner image and the image peeling body.
As a result, the image is not peeled from the image carrier. On the other hand, when the thermo-flexible ink (toner) flows, the toner permeates into the inside of the paper quality layer, and the adhesive force between the toner image and the image peeling member is greater than the adhesive force between the toner image and the paper. As the toner becomes smaller and the toner becomes fluid, the cohesive force of the toner itself becomes extremely small. As a result, the image is no longer peeled from the image carrier.

[0018]

According to the present invention, a paper fiber of an image support, even if it is an image support holding an image that is a line drawing having a large printing area or an image formed by a line drawing having a large printing area and a small drawing, An image support that is so-called paper-friendly and does not peel off the surface, does not leave an image, and does not cause wrinkling, stretching, or curling of paper, and completely peels the image from the image holding support. Can be played.

[Brief description of drawings]

FIG. 1 is an example of an image carrier reproducing apparatus of the present invention.

FIG. 2 is an example of a plurality of rollers.

FIG. 3 is another example of a plurality of rollers.

FIG. 4 is another example of a plurality of rollers.

FIG. 5 is another example of a plurality of rollers.

FIG. 6 Another example of a plurality of rollers (having a through hole)
Is.

FIG. 7 is a diagram showing an example of a combination of a plurality of rollers.

FIG. 8 is a diagram schematically showing the image peeling action in the present invention.

FIG. 9 is a diagram schematically showing the image peeling action in the present invention.

[Explanation of symbols]

A Paper Feeding Part B Coating Part C Image Peeling Part D Dry Finishing E Paper Ejecting Part F Cleaning Part 1 Supporting / Peeling Roller 2 Supporting / Separating Roller 3 Part Contacting Supporting / Image Peeling Part 4 Supporting / Image Peeling Part 5 part that does not come into contact with the support / image peeling body 6 insertion part of the image peeling part 7 support / image peeling body inserted in the insertion part of the image peeling part 8-1 partial contact with the support / image peeling body Roller 8-2 Roller with partial contact with support / image peeling body 8-3 Roller with partial contact with support / image peeling body 9-1 Rotating body with partial contact with support / image peeling body 9-2 Support / image peeling body Rotating body that makes partial contact 9-3 Rotating body that makes partial contact with supporting / image peeling body 10 Roller that makes full contact with supporting / image peeling body 11 Rotating body that makes full contact with supporting / image peeling body 12 Ejection section 13 Support Roller that makes full contact with the image peeling body 14 Rotating body that makes full contact with the supporting / image peeling body 15 Roller that makes full contact with the supporting / image peeling body 16 Support / Peeling body belt 17 Direction of force due to tension stress 18 Due to tension stress and own weight Direction of force 19 Peeler belt 20 Image carrier 21 Toner image 22 Roller and rotator that partially contact the support / peeler belt 23 Pressure direction 24 Pressure direction 25 Support / image peeler 26 Through hole

Claims (4)

[Claims] 1. An image carrier, at least a part of which is composed of a paper-like layer containing cellulose fibers as a main component, and on which a hydrophobic image made of a thermo-flexible ink is formed, contains water. A liquid is impregnated and held, and an image peeling member is closely integrated with the surface of the image holding support that is impregnated with the liquid containing water, and the tightly integrated product is sealed or tightly sandwiched by a sheet-like member that does not pass moisture. The integrated state product (hereinafter also referred to as a support / image peeling body) is conveyed while continuously contacting a plurality of rollers arranged in a zigzag shape without a gap, and the hydrophobic image is peeled from the paper-based layer. In the method of regenerating an image support, at least one of the plurality of rollers has a contact surface composed of a portion that contacts the support / image peeling body and a portion that does not contact the supporting / image peeling body, and Contact A method for reproducing an image support, characterized in that an area of a portion to be touched is large or small. 2. A method of regenerating an image support according to claim 1, wherein a plurality of rollers are arranged in the order of a small contact area of the support / image peeling body and a large contact area thereof. . 3. Water is applied to an image-bearing support which is composed at least in part of a paper-like layer containing cellulose fibers as a main component and which has a hydrophobic image formed of a heat-flexible ink formed on the paper-forming layer. Means (a) for impregnating and holding the liquid containing the sheet-like member, in which the image peeling body is closely adhered to the surface of the image holding support impregnated with the liquid containing water, and the closely integrated body is impermeable to water. Means (b) for forming a support / image peeling body by sealing or tightly sandwiching with each other, and an area of a portion which is in contact with the support / image peeling body and which is not in contact with the support / image peeling body. An image peeling means (c) comprising a plurality of rollers of different sizes arranged so that they can be brought into continuous contact with the supporting / image peeling body without any gaps.
And an image support replaying device having at least a finishing means (d) for reusing the image peeled off by the image peeling means as required. 4. A reproducing apparatus for an image support according to claim 3, wherein a plurality of rollers are arranged in order from one having a small contact area to the support / image peeling body to one having a large contact area. .